/**
 ******************************************************************************
 * @file    stm32f3_discovery.c
 * @author  MCD Application Team
 * @version V1.1.0
 * @date    20-September-2012
 * @brief   This file provides set of firmware functions to manage Leds and
 *          push-button available on STM32F3-DISCOVERY Kit from STMicroelectronics.
 ******************************************************************************
 * @attention
 *
 * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
 *
 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
 * You may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *        http://www.st.com/software_license_agreement_liberty_v2
 *
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 ******************************************************************************
 */

/* Includes ------------------------------------------------------------------*/
#include "stm32f3_discovery.h"

/** @addtogroup Utilities
 * @{
 */

/** @addtogroup STM32F3_DISCOVERY
 * @{
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL 
 * @brief This file provides set of firmware functions to manage Leds and push-button
 *        available on STM32F3-Discovery Kit from STMicroelectronics.
 * @{
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions
 * @{
 */
/**
 * @}
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL_Private_Defines
 * @{
 */
/**
 * @}
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL_Private_Macros
 * @{
 */
/**
 * @}
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL_Private_Variables
 * @{
 */
GPIO_TypeDef* GPIO_PORT[LEDn] = { LED3_GPIO_PORT, LED4_GPIO_PORT,
LED5_GPIO_PORT,
LED6_GPIO_PORT, LED7_GPIO_PORT, LED8_GPIO_PORT,
LED9_GPIO_PORT, LED10_GPIO_PORT };
const uint16_t GPIO_PIN[LEDn] = { LED3_PIN, LED4_PIN, LED5_PIN, LED6_PIN,
LED7_PIN, LED8_PIN, LED9_PIN, LED10_PIN };
const uint32_t GPIO_CLK[LEDn] = { LED3_GPIO_CLK, LED4_GPIO_CLK, LED5_GPIO_CLK,
LED6_GPIO_CLK, LED7_GPIO_CLK, LED8_GPIO_CLK,
LED9_GPIO_CLK, LED10_GPIO_CLK };

GPIO_TypeDef* BUTTON_PORT[BUTTONn] = { USER_BUTTON_GPIO_PORT };

const uint16_t BUTTON_PIN[BUTTONn] = { USER_BUTTON_PIN };

const uint32_t BUTTON_CLK[BUTTONn] = { USER_BUTTON_GPIO_CLK };

const uint16_t BUTTON_EXTI_LINE[BUTTONn] = { USER_BUTTON_EXTI_LINE };

const uint8_t BUTTON_PORT_SOURCE[BUTTONn] = { USER_BUTTON_EXTI_PORT_SOURCE };

const uint8_t BUTTON_PIN_SOURCE[BUTTONn] = { USER_BUTTON_EXTI_PIN_SOURCE };
const uint8_t BUTTON_IRQn[BUTTONn] = { USER_BUTTON_EXTI_IRQn };

/**
 * @}
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes
 * @{
 */

/**
 * @}
 */

/** @defgroup STM32F3_DISCOVERY_LOW_LEVEL_Private_Functions
 * @{
 */

/**
 * @brief  Configures LED GPIO.
 * @param  Led: Specifies the Led to be configured. 
 *   This parameter can be one of following parameters:
 *     @arg LED3
 *     @arg LED4
 *     @arg LED5
 *     @arg LED6
 *     @arg LED7
 *     @arg LED8
 *     @arg LED9
 *     @arg LED10
 * @retval None
 */
void STM_EVAL_LEDInit(Led_TypeDef Led) {
	GPIO_InitTypeDef GPIO_InitStructure;

	/* Enable the GPIO_LED Clock */
	RCC_AHBPeriphClockCmd(GPIO_CLK[Led], ENABLE);

	/* Configure the GPIO_LED pin */
	GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led];
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure);
}

/**
 * @brief  Turns selected LED On.
 * @param  Led: Specifies the Led to be set on. 
 *   This parameter can be one of following parameters:
 *     @arg LED3
 *     @arg LED4
 *     @arg LED5
 *     @arg LED6
 *     @arg LED7
 *     @arg LED8
 *     @arg LED9
 *     @arg LED10
 * @retval None
 */
void STM_EVAL_LEDOn(Led_TypeDef Led) {
	GPIO_PORT[Led]->BSRR = GPIO_PIN[Led];
}

/**
 * @brief  Turns selected LED Off.
 * @param  Led: Specifies the Led to be set off. 
 *   This parameter can be one of following parameters:
 *     @arg LED3
 *     @arg LED4
 *     @arg LED5
 *     @arg LED6
 *     @arg LED7
 *     @arg LED8
 *     @arg LED9
 *     @arg LED10
 * @retval None
 */
void STM_EVAL_LEDOff(Led_TypeDef Led) {
	GPIO_PORT[Led]->BRR = GPIO_PIN[Led];
}

/**
 * @brief  Toggles the selected LED.
 * @param  Led: Specifies the Led to be toggled. 
 *   This parameter can be one of following parameters:
 *     @arg LED3
 *     @arg LED4
 *     @arg LED5
 *     @arg LED6
 *     @arg LED7
 *     @arg LED8
 *     @arg LED9
 *     @arg LED10
 * @retval None
 */
void STM_EVAL_LEDToggle(Led_TypeDef Led) {
	GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led];
}

/**
 * @brief  Configures Button GPIO and EXTI Line.
 * @param  Button: Specifies the Button to be configured.
 *   This parameter should be: BUTTON_USER
 * @param  Button_Mode: Specifies Button mode.
 *   This parameter can be one of following parameters:   
 *     @arg BUTTON_MODE_GPIO: Button will be used as simple IO 
 *     @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
 *                            generation capability  
 * @retval None
 */
void STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode) {
	GPIO_InitTypeDef GPIO_InitStructure;
	EXTI_InitTypeDef EXTI_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;

	/* Enable the BUTTON Clock */
	RCC_AHBPeriphClockCmd(BUTTON_CLK[Button], ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);

	/* Configure Button pin as input */
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
	GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button];
	GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure);

	if (Button_Mode == BUTTON_MODE_EXTI) {
		/* Connect Button EXTI Line to Button GPIO Pin */
		SYSCFG_EXTILineConfig(BUTTON_PORT_SOURCE[Button],
				BUTTON_PIN_SOURCE[Button]);

		/* Configure Button EXTI line */
		EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button];
		EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
		EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
		EXTI_InitStructure.EXTI_LineCmd = ENABLE;
		EXTI_Init(&EXTI_InitStructure);

		/* Enable and set Button EXTI Interrupt to the lowest priority */
		NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button];
		NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
		NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
		NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

		NVIC_Init(&NVIC_InitStructure);
	}
}

/**
 * @brief  Returns the selected Button state.
 * @param  Button: Specifies the Button to be checked.
 *   This parameter should be: BUTTON_USER  
 * @retval The Button GPIO pin value.
 */
uint32_t STM_EVAL_PBGetState(Button_TypeDef Button) {
	return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
}

/**
 * @}
 */

/**
 * @}
 */

/**
 * @}
 */

/**
 * @}
 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
